[chbot] Another parts problem :(

Robin Gilks robin at gilks.org
Wed Feb 4 21:18:44 GMT 2015

I did think about a chain for a while but I don't think the drum is round
enough. A belt of some sort will take out some of the irregularity
(wobble!) and would grip the drum better than steel links.

I hope you kept the 24v motor from the opener :)

> How about using chain for your drum drive? Available from either old
> bicycle chain or old garage door opener chain complete with matching cogs?
> I have some old bicycles you could use, but sadly disposed of a door
> opener
> just a couple of weeks ago.
> Richard
> On Wed, Feb 4, 2015 at 10:59 PM, Robin Gilks <robin at gilks.org> wrote:
>> Greetings all
>> And so the saga of the walnut washer continues. Last Monday, 121kg of
>> galvanised steel arrived - 24m of 40x40 2mm wall, 16m of 40x40 3mm wall
>> and 8m of 25x25 2.5mm wall square tube. I managed to scrounge up half a
>> metre of 50x50 to fit inside the brush, mount the axle and fit the
>> drawer
>> bar coupling from a local company.
>> With the addition of an old trailer axle, it now looks like this.
>>    http://gilks.ath.cx/gallery/index.php/Nuts/IMG_3459
>> Three things left to do
>>  * mount the controller in such a way as it can be easily removed to
>> keep
>> out of the weather
>>  * install the plywood base and pond liner for the 'sump' that supplies
>> the washing water
>>  * build the drive for the drum.
>> Its the last item I need ideas on how to reduce cost.
>> I've already determined that the way to go is to use a toothed belt
>> 'in-side-out' on the drum so it becomes a large cog, being driven via
>> toothed belt from a cog on the motor shaft. Adding the bits up I'm not
>> going to get much change out of $500 for the 2 belts and the cog if I
>> buy
>> new from somewhere like i-trans.
>> Does anyone know where I can get the same sorts of bit second hand (i.e.
>> cheaper) - the cog will require adapting for the correct fit onto the
>> motor anyway and the drum is 560mm diameter - longer than most car belts
>> as far as I know.
>> So - where do I get a couple of long belts?
>> Cheers
>> --
>> Robin Gilks
>> Internet: robin at gilks.org    http://www.gilks.org
>> Tel:      (+64) (3) 347 4370
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Robin Gilks
Internet: robin at gilks.org    http://www.gilks.org
Tel:      (+64) (3) 347 4370

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